(5) Light rays frave ling in the surface air are inci dent on of In air, the 1light rays a ma ke e 40 with the ang e of while an hor mal カ the Jur tace the in the substance rays make an angle ot the in dex 20° with the normal. Calculate of refraction of the substace.

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(5) light rays fraveling in
the surface
air
incident
are
on
of
substance.
In air, the light rays
a
m a ke
an angu of
40 with the
hor mal
ゆ the
Jur face
while
in
the
substance
the
rays make
an angle of
the in dex
20° with
the
normal.
Calculate
of refraction
of
the
substace.
Transcribed Image Text:(5) light rays fraveling in the surface air incident are on of substance. In air, the light rays a m a ke an angu of 40 with the hor mal ゆ the Jur face while in the substance the rays make an angle of the in dex 20° with the normal. Calculate of refraction of the substace.
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